THE GLC-LH-SM IS A LONG HAUL OR LONG WAVELENGTH SFP MODULE (1310 NM NOMINAL), FOR USE IN 1000BASE-LX LINKS. USE ONLY THE SFP MODULES WITH YOUR MODULAR FAST ETHERNET LINE CARD. EACH SFP MODULE CONTAINS AN INTERNAL SERIAL EEPROM THAT IS SECURITY-PROGRAMMED BY THE SFP MANUFACTURER WITH INFORMATION THAT PROVIDES A WAY FOR CISCO (THROUGH THE CISCO IOS SOFTWARE) TO IDENTIFY AND VALIDATE THE SFP MODULE AS A MODULE TYPE THAT WAS TESTED AND QUALIFIED BY CISCO TO OPERATE PROPERLY WITH CISCO MODULAR FAST ETHERNET LINE CARDS.

THE GLC-LH-SM IS A LONG HAUL OR LONG WAVELENGTH SFP MODULE (1310 NM NOMINAL), FOR USE IN 1000BASE-LX LINKS. USE ONLY THE SFP MODULES WITH YOUR MODULAR FAST ETHERNET LINE CARD. EACH SFP MODULE CONTAINS AN INTERNAL SERIAL EEPROM THAT IS SECURITY-PROGRAMMED BY THE SFP MANUFACTURER WITH INFORMATION THAT PROVIDES A WAY FOR CISCO (THROUGH THE CISCO IOS SOFTWARE) TO IDENTIFY AND VALIDATE THE SFP MODULE AS A MODULE TYPE THAT WAS TESTED AND QUALIFIED BY CISCO TO OPERATE PROPERLY WITH CISCO MODULAR FAST ETHERNET LINE CARDS.